BIDDEFORD, Maine — Maine State Police announced Tuesday they are searching for two men they believe have information about the shootings that claimed the lives of two people Sunday night.

The two men sought by investigators — Lance Palmer, 44, of Auburn, and Christopher Dube, 28, of Dover, New Hampshire — are not the same two men police said they were looking for during a Monday afternoon news conference at the 19 Western Ave. crime site.

Lt. Brian McDonough of the Maine State Police said Monday a witness told police four individuals — two men and two women — were at the home at the time of the shooting.

In a Tuesday update, Maine Department of Public Safety spokesman Stephen McCausland said those four people, who were not identified, have been located and will be interviewed.

McCausland did not say why police believe Palmer and Dube may have information on the shootings, but they said in a statement “both men may have been in Biddeford on Sunday.”

He said Dube had been issued an arrest warrant for an unrelated probation violation and that Palmer, who has not been issued any arrest warrants, “should be considered armed and dangerous.”

McCausland said anyone with information on either man should call the Maine State Police in Gray at 657-3030.

“Evidence from the shooting scene will be analyzed at the state police crime lab in Augusta,” McCausland said in his Tuesday afternoon news release. “In addition, dozens of interviews have taken place with neighbors, friends and family of the dead men and those who live in the apartment house, where the shootings took place.”

McDonough identified the shooting victims Monday as Russell Lavoie, 42, of Old Orchard Beach and Jeffrey Lude, 37, of Biddeford.

Each man apparently died of multiple gunshot wounds, he said, though investigators are reconstructing ballistic evidence to determine whether multiple guns or multiple shooters were involved.

McDonough would not comment on whether any firearms — or any other signs of illegal activity, such as drug use — have been found at the Western Avenue apartment.

“I don’t think this was a random incident,” he said.

Biddeford police received reports of a shooting at the site just after 7 p.m. Sunday and found the victims already wounded.